134842369 has 2 divisors, whose sum is σ = 134842370. Its totient is φ = 134842368.

The previous prime is 134842349. The next prime is 134842403. The reversal of 134842369 is 963248431.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83905600 + 50936769 = 9160^2 + 7137^2 .

It is an emirp because it is prime and its reverse (963248431) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134842369 is a prime.

It is a super-2 number, since 2×134842369² = 36364928955064322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (134842339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67421184 + 67421185.

It is an arithmetic number, because the mean of its divisors is an integer number (67421185).

Almost surely, 2^134842369 is an apocalyptic number.

It is an amenable number.

134842369 is a deficient number, since it is larger than the sum of its proper divisors (1).

134842369 is an equidigital number, since it uses as much as digits as its factorization.

134842369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 40.

The square root of 134842369 is about 11612.1646991420. The cubic root of 134842369 is about 512.7930431164.

The spelling of 134842369 in words is "one hundred thirty-four million, eight hundred forty-two thousand, three hundred sixty-nine".